IPY: An Innovative Observational Network for Critical Arctic Gateways--Understanding Exchanges through Davis and Fram Straits

IPY：关键北极门户的创新观测网络——了解戴维斯海峡和弗拉姆海峡的交流

• 批准号: 0632231
• 负责人: Craig Lee
• 金额: $ 233.95万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-01 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0632231&HistoricalAwards=false
• 关键词: IPY; Innovative; Observational; Network; Critical

Lee 0632231University of WashingtonFunds are provided in support of a study to understand exchanges across a major gateway linking the Arctic with the subpolar North Atlantic " Davis Strait (Canadian Arctic Archipelago). The proposed study purports to quantify, with robust error estimates, Davis Strait watermass variability, volume, liquid freshwater, heat and ice fluxes at weekly to inter-annual timescales. These measurements will be used to advance understanding of the impacts of these exchanges on large scale characteristics of the Atlantic and Arctic Oceans. The proposed observation system, currently under development in Davis Strait, employs complementary techniques to resolve critical aspects of the exchange. The system includes: (1) A sparse array of subsurface moorings, each instrumented with an upward looking sonar, an Acoustic Doppler Current Profiler (ADCP), conductivity-temperature (CT) sensors, and (deep) conventional current meters, will provide time series of upper ocean currents, ice velocity, and ice thickness, (2) Shelf sites instrumented with ADCPs, CT sensors and an innovative, low-cost package for collecting CT time series in the ice-threatened near-surface region, and (3) Acoustically navigated Seagliders to provide year-round, repeated, high-resolution hydrographic sections across the straits.The Davis Strait network will be undertaken in collaboration with the Bedford Institution of Oceanography.

Lee 0632231华盛顿大学提供资金支持一项研究，以了解连接北极与亚极地北大西洋的主要门户“戴维斯海峡”（加拿大北极群岛）之间的交流。 拟议的研究旨在量化，与强大的误差估计，戴维斯海峡水团的变化，体积，液态淡水，热量和冰通量在每周到年际的时间尺度。 这些测量结果将用于促进了解这些交流对大西洋和北冰洋大规模特征的影响。 拟议的观测系统目前正在戴维斯海峡开发，采用补充技术来解决交换的关键问题。该系统包括：（1）稀疏的地下系泊阵列，每个系泊阵列都装有向上观察的声纳、声学多普勒海流剖面仪（ADCP）、电导率-温度（CT）传感器和（深）常规海流计，将提供上层洋流、冰速度和冰厚度的时间序列，（2）装有ADCP、CT传感器和创新的低成本的成套设备，用于收集受冰威胁的近地表区域的CT时间序列，以及（3）声学导航的海上滑翔机，用于提供跨海峡的全年、重复的、高分辨率的水文剖面图。